We yawn when we feel sleepy. Why ?
Answers
Answered by
3
Answer:
we don't yawn when we feel sleepy,
it just happens when our body experiences insufficiency of oxygen(O2)
Answered by
0
Brief answer
Answer:
When we feel sleepy, the rate of respiration goes down. Because of
this, lungs will not get enough oxygen and we yawn, Yawn brings extra
oxygen to your lungs.
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